Hypertrophic cardiomyopathy: how do mutations lead to disease?

Area of Science:

• Cardiology
• Genetics
• Molecular Biology

Background:

• Hypertrophic cardiomyopathy (HCM) is the most prevalent monogenic cardiac disease.
• It affects approximately 1 in 500 individuals.
• HCM is characterized by left ventricular hypertrophy due to genetic mutations.

Purpose of the Study:

• To elucidate the molecular mechanisms underlying hypertrophic cardiomyopathy (HCM).
• To map the pathways from genetic mutation to clinical presentation.
• To investigate the genotype-phenotype correlations in HCM.

Main Methods:

• Literature review focusing on molecular mechanisms of HCM.
• Analysis of genetic mutations associated with HCM.
• Correlation studies between genotype and clinical phenotype.

Main Results:

• HCM is caused by mutations in genes encoding sarcomere, Z-disc, or calcium modulator proteins.
• Significant inter- and intrafamilial heterogeneity exists in clinical presentation.
• Molecular pathways from mutation to phenotype remain incompletely understood.

Conclusions:

• Understanding the molecular basis of HCM is crucial for predicting disease progression.
• Further research is needed to clarify the pathways linking genotype to phenotype.
• This review synthesizes current knowledge on HCM molecular mechanisms and clinical correlations.